Tufting attachment for knitting-machines



(No Model.) 7 Sheath-Sheet "J. D. PARTELLO & J. P. JACKSON. TUFTINGATTACHMENT FOR KNITTING MAGHINES.

No. 416,421. Patented Dec. 3,-1889.

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No. 416,421. 4 Patented Dec. 3, 1889.

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No. 416,421. Patented Dec. 3, 1889.

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No. 416,421. Patented Dec. 3, 1889.

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No. 416,421. Patented Dec. 3, 188 9.

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No. 416,421. Patented Dec. 3, 1889.

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UNITED STATES PATENT OFFICE.

JOSEPH D. PARTELLO AND JOHN F. JACKSON, OF ROCHESTER, MICHIGAN.

TUFTING ATTACHMENT FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 416,421, dated December3, 1889.

Application filed June 4, 1889. Serial No. 813,069. (No model.)

To all whom it may concern:

Be it known that we, JOSEPH D. PARTELLO and JOHN F. JACKSON, ofRochester, in the county of Oakland and State of Michigan, have inventeda new and Improved Tufting Attachment for Knitting-Machines, of whichthe following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of our tufting attachment shown applied toa common circular-knitting machine, only such parts of the latter beingshown as are necessary to fully illustrate our invention. Fig. 2'is abroken plan View of the same. Fig. 3 is a sectional elevation on line so00 of Fig. 1, showing a presser-foot for confining the fabric, andshowing a modification of the lower edge of the cylinder L from thatshown in Figs. 1 and 6,

the guide-projections B being omitted in those latter figures. Fig. 4 isa'sectional plan view of Fig. 3. Fig. 5 is a view of the upper and lowercams for operating the tufting and knitting needles, respectively. Fig.6 is a side elevation of the main portion of the machine, showingmodified means for throwing the upper cam out of action. Fig. 7 is a detail sectional view showing the relative posi tions of the needles, andFig. 8 is a view illustrating the formation of the tufts.

By our invention a tufting-yarn is knitted in with the stitches of theordinary knitted fabric and carried to the inside surface of the fabricand either cut or left in the form of loops.

The needle-cylinder A, needles B, cam-cylinder O, and driving-gears D Eare all of the usual construction, except that the cam-cylinder C isformed with the side projections a a. In these side projections are heldloosely the columns F F, connected bynu'ts and lugs to the uppercam-cylinder G, so that this cylder willturn with the cam-cylinder C.

II is a short vertical shaft, which, by means of the collar Iand spiderJ, supports the said upper cam-cylinder G and columns F, andsaid shaft His held centrally above the knitting-machine by the bent arm K,supported by the post K, as shown clearly in Fig. 1. The spider J turnsfreely upon the central shaft H, and may be adjusted up or down by meansof the collar 1, which is held by a set screw I for that purpose.

\Vithin the cam-cylinder G is held the cylinder L, fixed by a set-screwS to the lower end of the vertical shaft H. This cylinder L has groovesM formed in its outer surface to form needle-slots, in which th etufting-needles N N are held. These slots at the lower edge of thecam-cylinder G reach entirely through the cylinder, as shown at m, andform guides for the tufting-needles and prevent them from lateraldeflection when acted upon by the cam R, which is held above theprojections R, which serve also to prevent lateral deflection of thetufting-needles, guiding them below the cam R.

The tufting-needles N are each formed with a hook I) and knife I) at thelower end, and with the projection 12 and hook b at the upper end, andare given an up-and-down and inward motion, 'as indicated in Figs. 3 and7. The vertical movement of these needles is produced by the cams O P Q,(shown in Fig. 5,) secured upon the inner surface of the cylinder G overthe irregular ledge cl, formed on said cylinder, so that a cam-groove dis formed to receive the projections 12 of the tuftingneedles N, asindicated in Figs. 3 and 7.

The inward movement of the needles N is produced by the adjustablecurved plate R, above referred to, attached to the cam-cylinder G, thegrooves or slots on through the cylinder forming a clearance for thesaid inward movement of the needles. The needles are forced back tovertical position by the springs f. (Shown clearly in Figs. 3 and 7.)

S T are bobbins held upon spindles attached to the plate U, held uponthe columns F at the top of the cylinders, as shown clearly in Fig. 1,and above the bobbins are held the guides S'T. On bobbin S is placed theyarn s, which passes up through the guide S, thence down to theguide-orifice 'i in the lower guide V, thence to the needles B, and isknit in the usual manner into a common fabric.

Upon the bobbin T is placed the tuftingyarn m, which passes up throughthe guidearm T, thence through the orifice '2' in the guide V, thencethrough the orifice w in the guide \V, and thence to the needles l5beneath 5 the latches. Between each two of the common stitches formed bythe needles l3 and remaining on said needles a needle Ndescends anddraws the yarn w inward, the latter being retained on the hooks b of theneedles N until the yarn is knit in the main part of the fabric by thedownward move ment of the needles 13, which movement dis charges the oldstitch formed of yarn s and the tufting-yarn at the same time, thereby I5 forming a loop, as shown at Z, Fig. 8, and, if desired, the said loopmay be cut to form tufts Z, also shown in Fig. 8. The cutting of theloops is effected by causing the needles N to descend as low aspossible, which is done by adjusting the cam P to its lowermostposition, as shown in Fig. 5. By lifting the cam P so its point standson a level with the lower edges of the cams O Q the needles N will notcut the yarn it, but will form loops Z. The cam 1 may be adjusted by thethumb-screw p, passing through the fixed block 1') and engaging the studp attached to the cam and projecting through the slot 1) in the ring G,as shown in Fig. 1, or it may be adjusted by a lever 11*, (shown in Fig.6,) the same being fulcrumed at 12 connected to the cam by the screw19', passing through slot 19 and provided at the free end with a smallpin orstud p to enter small orifice in the cylinder G, for holding thelever and cam in the desired position. The outside guide V is set inposition on the ring V and made the proper length to supply the needlesB with yarn, while the guide \V is fastened to a lug W, (see Fig. 4,)and made short enough to pass under and inside of the guide V when themotion is reversed. The guide \V is so proportioned that the yarn islaid along the needles B beneath the latches, and when the needles I)are drawn down by cams B (see Fig. 5) the tufting-yarn is cast off withthe previous loops and the new loops are formed of the yarn under thehooks of the needles B.

The tufting-yarn is to be carried in advance of the knitting-yarn, inwhichever way the machine is turned, and to effect this end the gear I)is formed on its upper surface with the lug or projection so arranged asto project through the slot 0 in the ring V and carry the yarn-guide \V.Said lug or projection and said slot are so arranged as to allow the lug\V to be a certain distance in advance of the yarn-guide V, carried bythe ring V ,and said lug transmits motion to the ring V, the slotserving to allow the gear D a back motion equal to the length of theslot, thereby allowing the yarn-guide 7, supported by the gear D, to bein advance of the yarn- 6 5 guide V, supported by the ring V, inwhichever direction they are turned.

X, Figs. 3 and 6, represents a presser-foot,

the tension of which is secured by the adjustment. of the binding-screwX. The said presser-foot is bent as shown in Fig. 3-that is, its lowerend reaches inward to the edge of the cylinder A and its upper endstands outward from the cylinder G, so that the presser-foot fulcrums onthe said cylinder G below the screw X, and when this screw is turned itforces the lower end of the presserfoot outward, and when the said screwis turned out the lower end of the foot is permitted to swing inward, sothat it exerts less pressure on the fabric, and by means of the slot 00the presser-foot may be adjusted vertically. The presser-foot is keptfrom swinging by means of the pin 41; in the slot or, as shown clearlyin Fig. 6. The object of the presser-foot is to retain the fabric andprevent it from being pulled by either set of needles.

In the cylinder L is formed the circumferential groove n, in which isplaced the spring-band n to catch the beveled hooks b at the upper endsof the needles N, and retain the needles in elevated position when theyare lifted out of action, as in knitting the heel and toe of a stocking.

The bent arm K is attached to the post K by a stud and socket, and bypreference held by a clamp'screw It, so that by sliding shaft 11 upthrough the end of the arm K the tufting attachment can be swung to oneside of the knitting-machine in the socket of the post K. The nut K andjamb -nut K (shown in Fig. l.) serve to adjust the height of the tufting mechanism.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. The combination, with the needle-cylinder and cam-cylinder and theknitting-necdles of a knitting-machine, of an upper needle-cylinder andcam-cylinder and upper no needles, cams in the upper cam-cylinder forimparting vertical movement to the upper needles, and a cam forimparting a swinging movement to the said upper needles, substantiallyas described.

2. The shaft H, held by the arm K, in combination with the cylinder L,needles N,. cam-cylinder G, spider J, columns F, and cylinder C, of theknitting-1nachine, substantially as described.

The combination, with the cylinder L and needles N held thereby, of thecam-cylinder G and plate R, for forcing the said needles inward,substantially as described. V

4. The needle N, formed with the hook Z), knife 11, and projections 12(2 substantially as and for the'purposes set forth.

5. The upper cylinders G L and upper needles N, and the lower needle andcam-cylinders and knitting-needles, in combination with the presser-footN and operating-screw, substantially as and for the purposes set forth.

6. The combination, with the upper cylin- ICC ders G L and the upperneedles N, of the springs f, arranged to press against the needles,substantially as described.

7. The combination, with the upper cylinders G L and needles N, of thesprings f, arranged to press against the needles, and the cam R,arranged to move the said needles inward, substantially as described.

8. The ring- V, slotted at c and having the guide V, in combination withthe gear or IO ring D, having stud W projecting through the slot 0 andprovided with the guide W, substantially as described.

JOSEPH D. PARTELLO. JOHN F. JACKSON. Y'Vitnesses:

H. J. TAYLOR, R. IMMIoK.

